Universal Windows® Apps with XAML and C# Unleashed

RichEditBox

RichEditBox is a version of TextBox that enables the display and editing of rich-formatted text. The reason it’s called RichEditBox rather than the more obvious RichTextBox is that it’s a thin wrapper over rich text formatting exposed by the Windows Runtime, which is a whole different set of APIs than the XAML-specific rich text formatting APIs. (Perhaps a future version of the XAML UI Framework will contain a RichTextBox control that supports XAML-specific TextElement-based rich formatting, similar to RichTextBlock.) The “rich edit” term also has a long history in Win32.

The implication of this is that interacting with RichEditBox feels a lot less like interacting with a typical XAML control and instead has an API style that betrays ...